Effective photostability improvements of rhodamine 6G film via antioxidant addition

IF 5.9 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem Pub Date : 2025-05-29 DOI:10.1016/j.flatc.2025.100892

Hanyu Liu , Mingcai Xie , Jinling Ma , Zhihong Wei , Daocheng Hong , Yuxi Tian

引用次数: 0

Abstract

Photostability is a crucial parameter of fluorescent dyes for their applications as probes, sensors, and labels. However, most dyes face a significant challenge of photobleaching under continuous light excitation in the format of film. In this study, we discovered that the photostability of Rhodamine 6G films can be significantly enhanced by the addition of ascorbic acid (AA). Such improvement of photostability by AA is also proved to be effective at single molecule level. We attributed the photostability improvement to the efficient elimination of the triplet state and free radicals of Rh-6G by AA via electron transfer, allowing for rapid recovery to the fluorescent state, and reduce the probability to react with oxygen. This finding not only offers an effective strategy for improving the photostability of fluorescent dyes with potential applications in molecular devices, but also enhances our understanding of the underlying photophysical and photochemical mechanisms.

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通过添加抗氧化剂有效改善罗丹明6G薄膜的光稳定性

光稳定性是荧光染料用作探针、传感器和标签的关键参数。然而，大多数染料都面临着在连续光激发下以胶片形式进行光漂白的重大挑战。在本研究中，我们发现加入抗坏血酸（AA）可以显著增强罗丹明6G薄膜的光稳定性。AA对光稳定性的改善在单分子水平上也被证明是有效的。我们将光稳定性的提高归因于AA通过电子转移有效地消除了Rh-6G的三重态和自由基，使其能够快速恢复到荧光状态，并降低了与氧反应的概率。这一发现不仅为提高荧光染料在分子器件中的光稳定性提供了有效的策略，而且增强了我们对潜在的光物理和光化学机制的理解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

FlatChem Multiple-

CiteScore

8.40

自引率

6.50%

发文量

104

审稿时长

26 days

期刊介绍： FlatChem - Chemistry of Flat Materials, a new voice in the community, publishes original and significant, cutting-edge research related to the chemistry of graphene and related 2D & layered materials. The overall aim of the journal is to combine the chemistry and applications of these materials, where the submission of communications, full papers, and concepts should contain chemistry in a materials context, which can be both experimental and/or theoretical. In addition to original research articles, FlatChem also offers reviews, minireviews, highlights and perspectives on the future of this research area with the scientific leaders in fields related to Flat Materials. Topics of interest include, but are not limited to, the following: -Design, synthesis, applications and investigation of graphene, graphene related materials and other 2D & layered materials (for example Silicene, Germanene, Phosphorene, MXenes, Boron nitride, Transition metal dichalcogenides) -Characterization of these materials using all forms of spectroscopy and microscopy techniques -Chemical modification or functionalization and dispersion of these materials, as well as interactions with other materials -Exploring the surface chemistry of these materials for applications in: Sensors or detectors in electrochemical/Lab on a Chip devices, Composite materials, Membranes, Environment technology, Catalysis for energy storage and conversion (for example fuel cells, supercapacitors, batteries, hydrogen storage), Biomedical technology (drug delivery, biosensing, bioimaging)